Home / 18,815,999.20-28,223,998.80-16,128,613.60

Finding the Fourth Proportional to 18,815,999.20, 28,223,998.80 and 16,128,613.60

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Solution

The fourth proportional to 18,815,999.20, 28,223,998.80 and 16,128,613.60 is: 24,192,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815,999.20 : 28,223,998.80 = 16,128,613.60 : x
  2. Step 2: Convert to fraction form
    18,815,999.20/28,223,998.80 = 16,128,613.60/x
  3. Step 3: Cross multiply
    18,815,999.20x = 28,223,998.80 × 16,128,613.60
  4. Step 4: Simplify right side
    18,815,999.20x = 455,213,970,892,063.69
  5. Step 5: Solve for x
    x = 455,213,970,892,063.69/18,815,999.20
  6. Step 6: Final answer
    x = 24,192,920.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.